#include <stdio.h>


enum Weather{  //枚举

    sun,
    rainy,
    haze
};
void trip(enum Weather weather){
 
     if(weather==sun){
        printf("out\n");
     }
     if(weather==rainy){
     	printf("no out\n");
     }
     if(weather==haze){
     	printf("no no out\n");
     }
}
int main (){

     enum Weather weather;
     trip(sun);

     return 0;
}